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Finding the Fourth Proportional to 70,876.71, 106,315.87 and 30,344.77

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Solution

The fourth proportional to 70,876.71, 106,315.87 and 30,344.77 is: 45,517.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,876.71 : 106,315.87 = 30,344.77 : x
  2. Step 2: Convert to fraction form
    70,876.71/106,315.87 = 30,344.77/x
  3. Step 3: Cross multiply
    70,876.71x = 106,315.87 × 30,344.77
  4. Step 4: Simplify right side
    70,876.71x = 3,226,130,280.85
  5. Step 5: Solve for x
    x = 3,226,130,280.85/70,876.71
  6. Step 6: Final answer
    x = 45,517.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.